摘要
提出了一种光伏系统中对光伏阵列运行参数进行采集、分析、存储并显示的数据采集系统。采集系统通过控制负载侧电压,可间接控制光伏阵列的工作电压,从0～V_(oc)连续变化,通过传感器采集电压和电流信号,并通过RS-232口与上位机通讯,进行数据传输,上位机程序采用Labview工具开发,同时实现数据处理、存储和波形显示功能。通过对光伏阵列运行参数的连续检测,可分析光伏阵列在测试地区全年气候条件下的运行特性,也可用于分析、比较不同厂家生产的太阳电池组件性能,形成历史统计数据等,它提供了用最经济的方式全面替代Ⅰ-ⅤChecker功能的途径,可对光伏系统的优化设计、故障诊断等提供有力的支持。
This paper deals with a method based on Labview for evaluation of the operating solar array to improve the system quality. By means of controlling the load magnitude and periodically scanning of the operating PV system to control the output voltage of solar array from 0- Voc, to capture the data of current and voltage at the same time. And then to transmit the acquired data via a 232 interface to an upper computer, which is developed in Labview and real-time completes the data acquisition, storage and processing. The application of Labview provides a facility to study the solar array without miscellaneous peripheral equipment and needs only a few mends. It provides an approach to substitute a high- priced I-V Checker or field tester and is quite helpful for system optimization and failure diagnosing. The analyses of some examples are given in this article.
出处
《太阳能学报》
EI
CAS
CSCD
北大核心
2007年第9期996-999,共4页
Acta Energiae Solaris Sinica
